Regarding ALGORITHMS

[PoojaGaur1708]

Hello , Algorithm fails at below step in libspdm_try_negotiate_algorithms L383.
Can you pls suggest !

if (libspdm_is_capabilities_flag_supported(
377 spdm_context, true,
378 SPDM_GET_CAPABILITIES_REQUEST_FLAGS_KEY_EX_CAP,
379 SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_KEY_EX_CAP)) {
380 algo_size = libspdm_get_dhe_pub_key_size(
381 spdm_context->connection_info.algorithm
382 .dhe_named_group);
383 if (algo_size == 0) {
384 printf("%s:%d***\n",func,LINE);
385 status = LIBSPDM_STATUS_NEGOTIATION_FAIL;
386 goto receive_done;
387 }

Get Capability 0000: 11 e1 00 00 00 00 00 00 c0 c2 00 00
Capability :0000: 11 61 00 00 00 00 00 00 c0 c2 00 00

Negotiate Algorithm Requester sending :
0000: 11 e3 04 00 30 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0020: 02 20 00 00 03 20 04 00 04 20 00 00 05 20 01 00

Algorithm Responder sending :
0000: 11 63 04 00 34 00 00 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0020: 00 00 00 00 02 20 00 00 03 20 04 00 04 20 00 00 05 20 01 00 00

[steven-bellock]

It looks both the Requester and Responder support KEY_EXCHANGE, however the Requester did not specify any DHE algorithms like secp256r1. We can probably put an assertion in the code to catch this.

[PoojaGaur1708]

yes resolved . thanks.